CN2136493Y

CN2136493Y - Improved keyboard structure for computer

Info

Publication number: CN2136493Y
Application number: CN92226765U
Authority: CN
Inventors: 陈宝金
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-11
Filing date: 1992-07-01
Publication date: 1993-06-16
Anticipated expiration: 2002-07-01
Also published as: DE9108530U1

Abstract

The utility model relates to an improved keyboard structure for a computer. One layer of diaphragm with a circuit is arranged below a fixed board, and the diaphragm is attached to a bottom board; a key cap which is arranged above the fixed board passes through the fixed board by a key pin; an elastic key ring is arranged between the diaphragm and the key cap. The utility model is characterized in that the fixed board is provided with key holes, and each of the key holes is inlaid with a key column; a plurality of oblique column wedges are arranged above the periphery of each key column, a plurality of column blocks are arranged below the periphery of each key column, and the distance between the column wedges and the column blocks is corresponding to the thickness of the fixed board; accordingly, the key columns can be clamped and fixed with the fixed board, so that the effects of thickness reduction and elastic arrangement can be obtained.

Description

Improved keyboard structure for computer

The utility model relates to a kind of improvement structure of computer keyboard.

Keyboard is as the data input device of computing machine, be long-standing, when its action principle system utilizes each key body to press down, default circuit is connected, and then import the literal or the numeral of this key body, with by computer for further processing, therefore, keyboard has its indispensable indispensability to computing machine.

Known computer keyboard, can be divided into mechanical type (MECHANICAL) and diaphragm type (MEMBRANE) substantially, claim mechanical, the section of its key body as shown in Figure 1, advantage is that key arrangement is unrestricted, but is decided by the printed circuit board (PCB) 11 of its below, and after its two pin (PINS) 12 passes through printed circuit board (PCB), last tin stove welding is fixing, so the new keyboard cost of development of different arrangements is low, risk is little.But shortcoming is 11 of keycap 13 and printed circuit board (PCB)s, must establish a keyswitch 14, the cost of manufacture height of this keyswitch 14, and the certain height of tool, and also originating, non-keyboard manufacturer can grasp; So in the design of keyboard, must cooperate appearance and the fit dimension of holding appearance and height thereof to determine keycap 13 with circuit characteristic on this keyswitch 14, simultaneously, its thickness can't change because of keyswitch 14, this is the obstacle of maximum for pursuing light, thin, short, little computer product requirement.

And title diaphragm type (MEMBRANE), it as shown in Figure 2, lie in a support plate 21(FRAME) on, be convexly equipped with a pillar 22, and with a resilient ring 23(RUBBER TONE) cover, then be keycap 24(KEY CAP on it), the feeler lever 25(Plunger that is extended from keycap 24) then pass through the hole that support plate 21 is preset, it is next for having the diaphragm switch 26(MEMBRANE of circuit) and a base plate 27(PLATE).The advantage of this mode is to save the keyswitch of mechanical type, so thickness can greatly reduce, only its shortcoming is because pillar 22 parts are integrally formed, so because of very accurate, relative risk increases and the cost raising on making, and the arrangement of keyboard because of above-mentioned defective make the arrangement (LAYOUT) of pillar can't the elasticity setting can't conversion, be single arrangement mode only, and die sinking is with high costs, and risk is bigger, and this kind keyboard now generally is used for notebook computer.

The improvement structure that the purpose of this invention is to provide a kind of computer keyboard.

In view of this, the applicant concentrates on studies based on being engaged in the experience of keyboard Designing with manufacturing all the year round, wishes to overcome the disappearance of above-mentioned dual mode, through implementing repeatedly, creates the improvement structure of the computer keyboard of this case finally.

For further disclosing the concrete technology contents of this case, at first see also accompanying drawing, wherein,

Fig. 1 is aforementioned known mechanical type keyboard diagrammatic cross-section,

Fig. 2 is known diaphragm type keyboard diagrammatic cross-section,

Fig. 3 is the key post of the utility model and the decomposing schematic representation of fixed head,

Fig. 4 is the diagrammatic cross-section of the utility model keyboard.

Shown in Fig. 3,4, basically, the keyboard of the utility model and each key body are the key ring 34 by fixed head 31, one keycaps, 32, one key posts 33 and a tool elasticity, and it down fits in base plate 36 with a diaphragm switch 35 with circuit and forms.

Wherein, diaphragm 35 and base plate 36, keycap 32 and key ring 34 be known all, also are the known technology that known diaphragm type button is adopted, so it non-ly is the creation emphasis of this case, plan is not given unnecessary details.

And on fixed head 31, need according to the actual keyboard arrangement, some keyholes 37 that run through are set on ad-hoc location, and its side, also just like known three holes that are provided with, feeler lever for keycap passes through, and is keycap 32 key pin space up and down when pushing, because it non-ly must have the key post as known diaphragm type button and adopt injection (injection) molding mode, so it can be plate and portals with punching press, so, on thickness, promptly more known support plate is for thin.

For asking keycap 32 position on keyboard fixing, so in this aforementioned keyhole 37, palpus caulked one key post 33, the appearance of this key post 33 is the cylindricality that an end tool is splayed as shown in Figure 4, its central tool one post hole 331, and its upper periphery, isogonism is provided with some post tenons 332, and it is served as reasons and goes up and declivity is outwards opened, then vertically flat the cutting in key post 33 in the bottom.In addition in below slightly, the post piece 333 of some evaginations then also is set, and its top also cuts in key post 33 for vertical flat, and the distance of end face on end face and the post piece 333 under the post tenon 332, then corresponding to the thickness of fixed head 31, and the setting of staggering of post tenon 332 and post piece 333.Yet key post 33 also can oppositely be implemented with the fixed form of fixed head, even the Dan Yizhu tenon fastens keyhole.

Please consult diagram again, when assembling, each key post 33 is up pushed via keyhole 37 from fixed head 31 belows, because post tenon 332 is oblique tangent plane, so can make key post 33 force to pass through keyhole 37, and make fixed head 31 be sticked in 333 of post tenon 332 and post pieces, be stationary state, again key ring 34, keycap 32 and diaphragm switch 35, base plate 36 are made up one by one, be a keyboard.

So, via the enforcement of this case, the height that key post and fixed head must be one-body molded in the time of can saving original injection moulding and the thickness of support plate and replace plate and key post, it can effectively reduce keyboard highly, this measure is most important breakthrough for notebook computer.Especially bad, the process that this case is adopted can be done the arrangement of elasticity according to the elasticity configuration of fixed head punching because of the key post, it is confined to the single arrangement form of support plate than known diaphragm type keyboard, improve its diversity, simultaneously, exempt the unfavorable factor of the high and excessive risk of the cost of development of injection molding.

Claims

1, a kind of improvement of computer keyboard structure, it lies in a fixed head, and the diaphragm switch that has one deck to have circuit under it fits in a base plate, and the top then is a keycap; And tool key pin extends through this fixed head, tool one elastic key ring therebetween,

The key position that it is characterized in that fixed head, have keyhole, and mat one key post passes through each described keyhole, and the periphery of key post top is provided with some oblique post tenons, and some post pieces are established in the below, end face distance makes it can set and engage described fixed head corresponding to the thickness of fixed head on the bottom face of described post tenon and the post piece.

2, the improvement of computer keyboard according to claim 1 structure is characterized in that the setting of staggering of post tenon and post piece.

3, the improvement of computer keyboard according to claim 1 structure is characterized in that, the Dan Yizhu tenon fastens keyhole.